Iterative DevelopmentAn Overview

of Scrum

Ball Point Exercise

• You’re a team: elect a PM! • Each round consists of the following:– 1 minute of you deciding how to organize yourself; you

get 2 minutes for the first round– At the end of this minute, the PM provides me an

estimate– 2 minutes of transporting balls following the rules– 1 minute of thinking what you can do to increase the

number of balls transported while staying within the rules• There are 5 rounds

Ball Point Rules

• Ball must have ‘air’ time• No ball to a direct neighbor• Start point = end point• Each person must touch the ball once (except

start/endpoint)• Dropped balls may be picked up or let go– they won’t be counted if you leave them– regardless, this will be your defect rate

Ball Point Debrief

• What round felt best to you? Why?• How did you arrive at your estimates?• What changes did you put in place? How did

you arrive at them?• Who told you what to do? Who told you how to

do it?• Do you think you could have gone faster?• If one person was much better than another,

would it have helped the team go faster?

Scrum Team

• Product Owner• Scrum Master• Team Member• (OIT PM)• Ideal Team Size = 7 ± 2

Team Arrangement

Value Team

Delivery Team

Product Owner

OIT PM

Scrum Master

Architect

Security

QA/IT&E SMEs

Daily Standup

tive

Retro

spec

ReviewPlanning

Planning

Depl

oym

ent

Release Cycletime ≤ 3 months

Iteration1 week ≤ time ≤ 4 weeks

RRR

RPR

Scrum Ceremonies

Release Cycle

Iteration

Feedback Loops

Build-Test

UsersProductOwner

Devs